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Editorial Team
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Asked: 2026-05-15T19:21:11+00:00

I have the following script which I need to modify a little. Here is

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I have the following script which I need to modify a little. Here is the json:

[
    {"User1":{"v": 50.00,"f": "£100"}},
    {"User2":{"v": 10.00,"f": "£20"}},
    {"User3":{"v": 10.00,"f": "£20"}},
    {"User4":{"v": 10.00,"f": "£20"}},
    {"User5":{"v": 20.00,"f": "£40"}}
]

and here is the script:

<html>
<head>
<script language="javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
    google.load("visualization", "1", {packages:["corechart"]});
    google.setOnLoadCallback(drawChartAjax);

    function drawChartAjax() {
        $.ajax({ 
            url: 'chart_json.aspx', 
            type: 'POST', 
            dataType: 'json', 
            success: function(data) { 
                drawChart(data); 
            } 
        });
    }

    function drawChart(json) {
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'User');
        data.addColumn('number', 'v');
        data.addRows(json.length);
        for(var j in json) {
            for(var k in json[j]) {
                data.setValue(parseInt(j), 0, k);
                data.setValue(parseInt(j), 1, json[j][k].v);
            }
        }
        var chart = new google.visualization.PieChart( document.getElementById('chart_div') );
        chart.draw(data, {width: 500, height: 300, is3D: true, title: 'Work In Progress'});
    }
</script>
</head>
  <body>
    <div id="chart_div"></div>
  </body>
</html>

This works by giving me a nice piechart, How do I get the “f” value into the chart too from the JSON data?

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1 Answer

  1. Editorial Team

    Add an f column:

    data.addColumn('number', 'v');
data.addColumn('number', 'f'); // <- new line

    And, add the data to the rows:

    for(var k in json[j]) {
    data.setValue(parseInt(j), 0, k);
    data.setValue(parseInt(j), 1, json[j][k].v);
    data.setValue(parseInt(j), 2, parseInt(json[j][k].f.substring(1))); // <- new line
}

    But, I don’t know how a pie chart handles that.

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